公开(公告)号：US4296075A

公开(公告)日：1981-10-20

申请号：US963661

申请日：1978-11-24

Applicant: Tsoung-yuan Yan

Inventor： Tsoung-yuan Yan

IPC: C01B17/62 ,  C01G43/00 ,  C22B60/02

CPC classification number: C22B60/0265 ,  C01B17/62 ,  C22B3/24 ,  C22B3/42 ,  Y02P10/234

Abstract: A method for protecting an ion-exchange resin in a uranium and/or related values recovery operation from poisoning by polythionates contained in the leach solution. A guard chamber containing a catalytic material is positioned in the leaching circuit upstream of the resin so the leach solution will pass through the catalytic material before it contacts the resin. The catalytic material, e.g. activated carbon, converts the polythionates to non-poisoning thiosulfates, sulfites, and water which offer no poisoning threat to the resins. An oxidant, e.g. oxygen, is added to the leach solution before it passes through the catalytic material to speed up the catalytic reaction.

Abstract translation: 用于保护铀和/或相关值回收操作中的离子交换树脂的方法不会由浸出溶液中所含的多硫代硫酸中毒。 含有催化材料的保护室位于树脂上游的浸出回路中，因此浸出溶液在与树脂接触之前将通过催化材料。 催化材料，例如 活性炭将多硫化物转化为不中毒的硫代硫酸盐，亚硫酸盐和水，对树脂没有中毒威胁。 氧化剂，例如 氧气在其通过催化材料之前加入到浸出溶液中以加速催化反应。

公开(公告)号：US4240901A

公开(公告)日：1980-12-23

申请号：US34834

申请日：1979-04-30

Applicant: Costandi A. Audeh ,  Tsoung-yuan Yan

Inventor： Costandi A. Audeh ,  Tsoung-yuan Yan

IPC: C10G21/00 ,  F02B3/06

CPC classification number: C10G21/00 ,  F02B3/06

Abstract: An improved solvent refining process for hydrocarbon oils such as asphalt-free lube fractions and diesel fuels is provided by recycling an inert gas such as nitrogen through the contact zone of the extraction tower.

Abstract translation: 通过将诸如氮气的惰性气体再循环通过提取塔的接触区域来提供用于烃油的改进的溶剂精制方法，例如无沥青的润滑油馏分和柴油燃料。